Phosphorus-free scale inhibitor and preparation method thereof

A phosphorus-free scale inhibitor, rotational speed technology, applied in chemical instruments and methods, descaling and water softening, chemical/physical/physical-chemical processes using energy, etc. Blocking and anti-scalants have very high requirements for anti-scaling performance

Pending Publication Date: 2021-07-09
上绍同烯达(绍兴)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to prevent the scale problem caused by the increase of ion concentration caused by concentration in the membrane, high-efficiency scale inhibitors are used for treatment. For mine water with high hardness, high alkalinity and high chloride in coal mine sewage treatment plants, the conductivity is usually 10000μs /cm, the sulfate content is about 2000mg/L, and the chloride is about 2000mg/L, which requires very high antiscalant performance. However, co

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A phosphorus-free scale inhibitor, comprising the following raw materials in parts by weight: 15 parts of nuclear microspheres, 2 parts of citrate, 2 parts of modified 8-hydroxyquinoline, 2 parts of nonylphenol polyoxyethylene ether ammonium sulfate, tryptophan 2 parts acid, 20 parts acetone, 20 parts deionized water;

[0029] The phosphorus-free scale inhibitor is made by the following steps:

[0030] Add the nuclear microspheres and acetone into the photocatalytic reactor, stir at room temperature at a speed of 50r / min for 5min, then add citric acid ester, modified 8-hydroxyquinoline, nonylphenol polyoxyethylene ether ammonium sulfate and tryptamine acid, keep stirring for 10 minutes at the same speed, finally add deionized water, increase the speed to 100r / min, vacuumize and fill nitrogen, then turn on the ultraviolet lamp, stir and react for 2 hours, and the phosphorus-free scale inhibitor can be obtained after the reaction is completed. agent.

[0031] Wherein, t...

Embodiment 2

[0042] A phosphorus-free scale inhibitor, comprising the following raw materials in parts by weight: 16 parts of nuclear microspheres, 2 parts of citrate, 2 parts of modified 8-hydroxyquinoline, 2 parts of nonylphenol polyoxyethylene ether ammonium sulfate, tryptophan 2 parts acid, 22 parts acetone, 23 parts deionized water;

[0043] The phosphorus-free scale inhibitor is made by the following steps:

[0044] Add the nuclear microspheres and acetone into the photocatalytic reactor, stir at room temperature at a speed of 60r / min for 7min, then add citric acid ester, modified 8-hydroxyquinoline, nonylphenol polyoxyethylene ether ammonium sulfate and tryptamine Acid, keep stirring for 10 minutes at the same speed, finally add deionized water, increase the speed to 150r / min, vacuumize and fill nitrogen, then turn on the ultraviolet lamp, stir and react for 3 hours, after the reaction, the phosphorus-free scale inhibitor can be obtained. agent.

[0045] Wherein, the preparation m...

Embodiment 3

[0056] A phosphorus-free scale inhibitor, comprising the following raw materials in parts by weight: 19 parts of nuclear microspheres, 3 parts of citrate, 3 parts of modified 8-hydroxyquinoline, 3 parts of nonylphenol polyoxyethylene ether ammonium sulfate, tryptophan 3 parts acid, 25 parts acetone, 25 parts deionized water;

[0057] The phosphorus-free scale inhibitor is made by the following steps:

[0058] Add the nuclear microspheres and acetone into the photocatalytic reactor, stir at room temperature at a speed of 80r / min for 7min, then add citric acid ester, modified 8-hydroxyquinoline, nonylphenol polyoxyethylene ether ammonium sulfate and tryptamine acid, keep stirring for 10 minutes at the same speed, finally add deionized water, increase the speed to 150r / min, vacuumize and fill nitrogen, then turn on the ultraviolet lamp, stir and react for 2 hours, and the phosphorus-free scale inhibitor can be obtained after the reaction. agent.

[0059] Wherein, the preparatio...

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Abstract

The invention discloses a phosphorus-free scale inhibitor which is prepared from the following raw materials: nuclear microspheres, citrate, modified 8-hydroxyquinoline, nonylphenol polyoxyethylene ether ammonium sulfate, tryptophan, acetone and deionized water. The invention also discloses a preparation method of the phosphorus-free scale inhibitor, the preparation method comprises the following steps: adding the core microspheres and acetone into a photocatalytic reactor, stirring for 5-10 minutes at the room temperature and the rotating speed of 50-100 r/min, then adding citrate, modified 8-hydroxyquinoline, ammonium nonylphenol polyoxyethylene ether sulfate and tryptophan, continuously stirring for 10 minutes without changing the rotating speed, finally adding deionized water, increasing the rotating speed to 100-200 r/min, vacuuming and introducing nitrogen, and then turning on the UV lamp, performing stirring reaction for 2-4h, and obtaining the phosphorus-free scale inhibitor after the end of the reaction. The scale inhibitor does not contain any organic phosphorus or inorganic phosphoric acid, the risk of microbial pollution of a membrane system and the pollution discharge influence on the environment are reduced, and the scale inhibitor is easy to disperse.

Description

technical field [0001] The invention belongs to the technical field of scale inhibitor preparation, and in particular relates to a phosphorus-free scale inhibitor and a preparation method thereof. Background technique [0002] Reverse osmosis is a water treatment technology that uses membrane separation. Using the principle of reverse osmosis, a reverse osmosis membrane with a high degree of selective permeability is used to pass a part of the feed water through the membrane in a direction perpendicular to the membrane to make dehydration salt. Colloidal substances will be concentrated on the surface of the membrane, and the remaining part of the feed water will take away the concentrated substances along the direction parallel to the membrane. This method can make the removal rate of inorganic salts, hardness ions, organic matter and bacteria in water reach 97-98%. Reverse osmosis technology is more and more widely used because of its environmental protection, energy saving...

Claims

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Application Information

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IPC IPC(8): C02F5/12B01J19/12
CPCC02F5/12B01J19/123
Inventor 不公告发明人
Owner 上绍同烯达(绍兴)新材料科技有限公司
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